Explosive-engine.



c. E. BAKER & E. M. DE LONG.

EXPLOSIVE ENGINE. APPLICATION man JULY 8. 1910.

1,154,475; PatentedSept. 21, 191 5.

. WITNESSES 4 4 5w.

. WQ/M AT RNEk C. E. BAKER & E. M. DE LONG.

EXPLOSlVE ENGINE.

APPLICATION FILED JULY 8. 1910.

1,1543%, PatentedSept. 21, 1915.

2 SHEEIS-SHEE1 2.

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WITNESSQS' 1 N 2h I W UNITED STATES PATENT OFFICE.

CHA LEs E. BAKER AND EVERETT M. be LONG, or HARTFORD, CoNNECTICUT, ASSIGN- oRs, BY MEsNE ASSIGNMENTS, To THE NEW BRITAIN MACHINE C MEANY, 01? NEW BRITAIN, CONNECTICUT, A CORPORATION OF CONNECTICUT.

EXPLOSIVE-ENGINE.

To'all who, '1' t nmy concern Be it known that We, CHARLES E. BAKER" and-Evizlm'r'r M. on LONG, each a citizen of the United States, and each a resident of Hartford, in he county of .Hartford and State of Connecticut, have invented a new Improvement in Explosive Engines, of which the following is a specification.

Our invention relates to that class of engines in which the power to drive the piston is obtained from the ignition of acombustible charge within the cylinder, and the object of the invention is generally to provide a device of this class having novel features of construction and operation.

One form of device embodying our invention and in the use of which the objects liereinabove set out may be attained is illustrated in the accompanying drawings, in which-- 3 "Figure lis a view in central vertical section through an engine embodying our improvement. Fig. 2 is a view in vertical section on plane denoted by dotted line 2-2 of Fig. 1. and with parts otherwise broken away to show construction. Fig. 3 is a view in horizontal section on plane denoted generally by dotted line 3-3 of Fig. 1.

An. engine containing the features of improvement forming the subject-matter of this application may be of various types and embody different forms of construction and it may be applied to various uses. Such an engine is especially applicable for use in motorcycle construction, and for this reason we have selected a construction of mount ap plicable to'such a vehicle for the purpose of illustration and description of our invent-ion herein.

In the accompanying drawings the numeral 6 indicates a portion of a lower frame part of a motorcycle secured to an upper fram'e part 7 in any suitable manner. A bracket 8 is'located' upon this part 6, said bracket forming a support for one end of the lower section 9 of a crank case upon which the cylinders 10, 11 are supported. The crank case may be otherwise supported if necessary in any desired manner, but as such support is not material to this invention further and detailed description is omittedherein. The upper section 12 of this crank case is firmly secured to t-lielower section, the two part'sa-t their meeting. faces Specification of Letters Patent.

Application filed July 8, 1910. Serial No. 570,949.

being formed to provide bearings for a crank shaft 13. The sections of the caseare also of a construction to provide crank chambers ll, 15 within which the cranks 16, 17 are located. The crank shaft, cranks and fly-wheel 18 may be of any suitable construction, which however is not essential to our present invention. The cylinders 10, 11 are secured to the upper section 12 of the casing immediately over the crank cham bers ll, 15 which have openings to the interior of the cylinders for the passage of the pitmen 21, each of which is connected at one'end to one of the pistons 22 and at the other end to one or" the cranks 16 or 17.

The valves. having means for separately adjusting the pressure with which they bear against the valve seats form a feature of our invention. If such pressure of either valve is too great or too little the maximum efl'ect will not be obtained; hence it will be seen that in order to obtain the fullefiiciency of the engine the valves should have means whereby this pressure maybe graduated to a nicety, and when the right pressure is obtained then it should be preserved,

Our construction aflords greatest freedom I of action for the valves, the bearing plates being readilyaccessible for the purpose of adjustment of the pressure of the springs.

.The' upper section 12 of the crank casing contains an intake chamber 23 and mainv chambers having their inner ends divided by hearing plates 29 into valve chambers '24,

25 for intake or distributing valves, 26, 27

that control the openings from the intake chamber to the alve chambers. Each of these distributing valves has a stem projecting from each side, the stem 28 projecting from what may be termed the outer side of the valve, being-located in a bearing plate 29. Each bearing plate separates the outer part of the main chamber, or outer chamber, from a valve chamber, and each plate is adjustable lengthwise Within the valve chamber, as herein shown this adjustment being obtained by screw-threaded interengaging parts between the plate and the wall ofthe val've. chamber, the showing of threads on the plate being omitted for sake of clearness. Each plate has a threaded stem 30'within which a valve stem projects, the outer end- 'around the edges of the valve chamber.

' Each valve is held to its seat by a valve spring'32. One of the stems projecting from what may be termed the inner face of one of the valves is hollow and receives the stem projecting from the inner face of the oppo site valve. In the construction herein shown the stem 33 from the valve 26 projects withthese inletpa-ssages conducting the fuel to inlet ports 40 through the wall of the cylinder to the interior thereof. Each of these ports has a bridge 41 diagonally arranged as plainly shown in Fig. 1, this bridge serving as a guide to prevent the piston or its packing from encountering the walls of the port. Each of the pistons is provided with a bafile 42 located on its upper end, this baflieprojecting to such extent that it closely approaches the upper end of the cylinder in the upstroke of the piston. The exhaust ports from each cylinder lead to an exhaust pipe 44 which may discharge at any suitable point, in the construction herein shown this discharge being into the lower frame part 6. The upper end of the cylinders may be sup ported if desired by a frame member 45.

The construction of the valves enables the tension of the spring to be adjusted while the engine is running, so that it may be readily determined when the correct adjustment is obtained and the valves are working properly. This adjustment is performed by removing the locking cap 31 which gives access to the bearing plate 29 without opening the valve chamber. T his bearing plate may then be turned until the proper pressure upon the spring-is obtained when the cap is again placed in position, the screw-threaded engagement with the stem of the plate locking the latter in the position in which it has been placed.

We do. not limit our invention as defined by the following claims to a device constructed exactly in accordance with the fore- 8 going illustration and description of the preferred form in which the invention is shown and embodied,, as these may be departed from to a greater or. less extent without avoiding the invention.

We claim- 1. A casing having an intake chamber and a main chamber, the latter divided into valve and outer chambers, a bearing rising from the floor of said intake chamber, a valve located in said valvechamber, a stem projecting from the valve into said bearing, a

spring to force the valveagainst its seat, a plate closing the valve chamber and receiving the thrust of said spring, and means for adj ustably positioning the plate.

2. A casing having an intake chamber and a main chamber, the latter being divided into valve and outer chambers, a bearing rising from the floor of the intake chamber, a valve located in the valve chamber, a spring to force the valve against its seat, a plate located within the main chamber and closing the valve chamber and receiving the thrust of said spring, means for adjustably positioning said plate, a stem projecting from the valve into said bearing, and a stem projecting from the opposite side of said valve into said plate.

8. A casing having an intake chamber and main chambers, the latter being each divided into valve and outer chambers, a bearing projection rising from the floor of the intake chamber, valves located in each of said valve chambers to control the inlets to the main chambers, stems pro ecting from each of the valves into said bearing projection, and means for forcing the valves against their seats.

4. A casing having an intake'chamber and main chambers, the latter being each divided into valve and outer chambers, a bearing projection rising from the floor of said intake chamber, valves located within each of the valve chambers, a valve stem projecting from one valve into said bearing projection, a stem projecting from the opposite valve into the stem of the first mentioned valve, and means for forcing the valves against their seats.

5. A casing having closed valve chambers located therein, valves oppositely located in said chambers to control How offluid, a

stem projecting from one of said valves, a

stem projecting from the opposite valve and having a bearing in the first mentioned stem, means for forcing the valves to their seats, and means arranged to adjust the pressure upon the valves when said chambers are closed.

6. A casing having valve chambers, valves oppositely located within said chambers, springs pressing against said valves, a plate closing each of said valve chambers and receiving the thrust of .a spring,.means for adjustably positioning said plate, a stem projecting. from one valve and having an opening therein, and a stem' projecting from the opposite valve into the opening in the first mentioned stem.

7. ,A casing having a valve chamber and a bearing projecting from the wall of said chamber, a valve located in said chamber to control flow of fluid, a spring to force the valve against its seat, a plate closing the valve chamber and receiving thrust of the spring, means for adj ustably positioning the plate, a stem projecting from the valve into said bearing projection, and a stem projecting from the opposite side of said valve into said plate.

5 8. A casing having an inlet chamber, a

' bearing projecting within said chamber,

valve chambers, valves located in each of said chambers to control the inlets thereto,

, stems projecting from each of the valves 10'into said bearing projection, and means for a forcing the valves against their seats.

' 9. A casing having an inlet. chamber, a

bearing projecting Within said chamber,

valve chambers, valves located in each of said chambers, a valve stem projecting from 15 one 'valve into said bearing projection, a stem projecting from the other valve into the stem of the first mentioned valve, and means for forcing the valves against their seats.

\Vitnesses LENA E. BERKOVITOH, G. B. LYNCH. 

